Firefox version 20.01 but updater exe 20.0.0.4833?

My Firefox version is 20.01 and today it showed updating more than twice which is not normal. When I checked I found out the updater exe version is 20.0.0.4833.

I wonder if it is normal and there is nothing to be worried about?
I will also upload screen shot in next posting.

Thank you.

My Firefox version is 20.01 and today it showed updating more than twice which is not normal. When I checked I found out the updater exe version is 20.0.0.4833.
I wonder if it is normal and there is nothing to be worried about?
I will also upload screen shot in next posting.
Thank you.